: pop( dest = '' )
    ᡼ dest  << ᥽åɤȤäƽ񤭤ߤޤ
    dest ֤ޤ

        # example
        allmails = nil
        POP3.start( 'your.pop3.server', 110,
                    'YourAccount, 'YourPassword' ) {|pop|
            allmails = pop.mails.collect {|popmail| popmail.pop }
        }

: pop {|str| .... }
    ᡼ʸ򾯤Ťɤߤߡ缡֥åͿޤ

        # example
        POP3.start( 'localhost', 110 ) {|pop3|
          pop3.each_mail do |m|
            m.pop do |str|
              # do anything
            end
          end
        }

